Jpa之与Spring整合

最近正在学习Jpa, 今天刚学完为了巩固和温习之前学习的Spring, 于是就尝试将Jpa整合到Spring中。接下来就开始我们的工作吧。

一 : 开发环境
（1）：开发工具IDEA2016，Spring4.0，Jpa的实现Hibernate4.0.2
二：创建一个Maven工程（创建过程就不在这里多做赘述）
（1）pom.xml

 <dependencies>    <!-- junit测试 -->    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>4.11</version>      <scope>test</scope>    </dependency>    <!-- hibernate依赖 -->    <dependency>      <groupId>org.hibernate.common</groupId>      <artifactId>hibernate-commons-annotations</artifactId>      <version>4.0.2.Final</version>    </dependency>    <dependency>      <groupId>org.hibernate</groupId>      <artifactId>hibernate-core</artifactId>      <version>4.1.9.Final</version>    </dependency>    <dependency>      <groupId>org.hibernate</groupId>      <artifactId>hibernate-entitymanager</artifactId>      <version>4.1.9.Final</version>    </dependency>    <dependency>      <groupId>org.hibernate.javax.persistence</groupId>      <artifactId>hibernate-jpa-2.0-api</artifactId>      <version>1.0.1.Final</version>    </dependency>    <dependency>      <groupId>org.hibernate</groupId>      <artifactId>hibernate-validator</artifactId>      <version>4.2.0.Final</version>    </dependency>    <!-- hibernate 二级缓存 -->    <dependency>      <groupId>net.sf.ehcache</groupId>      <artifactId>ehcache-core</artifactId>      <version>2.4.3</version>    </dependency>    <dependency>      <groupId>org.hibernate</groupId>      <artifactId>hibernate-ehcache</artifactId>      <version>4.2.4.Final</version>    </dependency>    <dependency>      <groupId>org.jboss.logging</groupId>      <artifactId>jboss-logging</artifactId>      <version>3.1.0.GA</version>    </dependency>    <dependency>      <groupId>org.slf4j</groupId>      <artifactId>slf4j-api</artifactId>      <version>1.6.0</version>    </dependency>    <dependency>      <groupId>org.jboss.spec.javax.transaction</groupId>      <artifactId>jboss-transaction-api_1.1_spec</artifactId>      <version>1.0.1.Final</version>    </dependency>    <dependency>      <groupId>org.eclipse.persistence</groupId>      <artifactId>javax.persistence</artifactId>      <version>2.1.0-RC2</version>    </dependency>    <dependency>      <groupId>dom4j</groupId>      <artifactId>dom4j</artifactId>      <version>1.6.1</version>    </dependency>    <dependency>      <groupId>antlr</groupId>      <artifactId>antlr</artifactId>      <version>2.7.7</version>    </dependency>    <dependency>      <groupId>org.javassist</groupId>      <artifactId>javassist</artifactId>      <version>3.15.0-GA</version>    </dependency>    <!-- mysql驱动 -->    <dependency>      <groupId>mysql</groupId>      <artifactId>mysql-connector-java</artifactId>      <version>5.1.18</version>    </dependency>    <dependency>      <groupId>org.jboss.logging</groupId>      <artifactId>jboss-logging</artifactId>      <version>3.1.0.CR2</version>    </dependency>    <dependency>      <groupId>commons-collections</groupId>      <artifactId>commons-collections</artifactId>      <version>3.1</version>    </dependency>    <dependency>      <groupId>commons-logging</groupId>      <artifactId>commons-logging</artifactId>      <version>1.1.2</version>    </dependency>    <!-- Spring依赖  -->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-core</artifactId>      <version>4.0.0.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-beans</artifactId>      <version>4.0.0.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-context</artifactId>      <version>4.0.0.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-context-support</artifactId>      <version>4.0.0.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-expression</artifactId>      <version>4.0.0.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-aop</artifactId>      <version>4.0.0.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-orm</artifactId>      <version>4.0.0.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-test</artifactId>      <version>4.0.0.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-web</artifactId>      <version>4.0.0.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-webmvc</artifactId>      <version>4.0.0.RELEASE</version>    </dependency>    <dependency>      <groupId>cglib</groupId>      <artifactId>cglib</artifactId>      <version>3.1</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-aspects</artifactId>      <version>4.0.0.RELEASE</version>    </dependency>    <dependency>      <groupId>org.aspectj</groupId>      <artifactId>aspectjrt</artifactId>      <version>1.6.6</version>    </dependency>    <dependency>      <groupId>org.aspectj</groupId>      <artifactId>aspectjweaver</artifactId>      <version>1.6.6</version>    </dependency>    <dependency>      <groupId>com.mchange</groupId>      <artifactId>c3p0</artifactId>      <version>0.9.2</version>    </dependency>  </dependencies>

二：Spring的配置文件(applicationContext.xml)

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:tx="http://www.springframework.org/schema/tx"    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">    <!-- 配置自动扫描的包 -->    <context:component-scan base-package="org.spring.jpa"></context:component-scan>    <!-- 配置 C3P0 数据源 -->    <context:property-placeholder location="classpath:db.properties"/>    <bean id="dataSource"        class="com.mchange.v2.c3p0.ComboPooledDataSource">        <property name="user" value="${jdbc.user}"></property>        <property name="password" value="${jdbc.password}"></property>        <property name="driverClass" value="${jdbc.driverClass}"></property>        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>           <!-- 配置其他属性 -->    </bean>    <!-- 配置 EntityManagerFactory -->    <bean id="entityManagerFactory"        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">        <!-- 注入数据源 -->        <property name="dataSource" ref="dataSource"></property>        <!-- 配置 JPA 提供商的适配器. 可以通过内部 bean 的方式来配置 -->        <property name="jpaVendorAdapter">            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"></bean>        </property>        <!-- 配置实体类所在的包 -->        <property name="packagesToScan" value="org.spring.jpa.entity"></property>        <!-- 配置 JPA 的基本属性. 例如 JPA 实现产品的属性 -->        <property name="jpaProperties">            <props>                <prop key="hibernate.show_sql">true</prop>                <prop key="hibernate.format_sql">true</prop>                <prop key="hibernate.hbm2ddl.auto">update</prop>            </props>        </property>    </bean>    <!-- 配置 JPA 使用的事务管理器 -->    <bean id="transactionManager"        class="org.springframework.orm.jpa.JpaTransactionManager">        <property name="entityManagerFactory" ref="entityManagerFactory"></property>        </bean>    <!-- 配置支持基于注解是事务配置 -->    <tx:annotation-driven transaction-manager="transactionManager"/></beans>

三：实体类（Person.java）

@Table(name = "jpa_person")@Entitypublic class Person {    @GeneratedValue    @Id    private Integer pid;    private String pname;    private Integer gender;    private String address;    public Person() {    }    public Person(String pname, Integer gender, String address) {        this.pname = pname;        this.gender = gender;        this.address = address;    }    public Integer getPid() {        return pid;    }    public void setPid(Integer pid) {        this.pid = pid;    }    public String getPname() {        return pname;    }    public void setPname(String pname) {        this.pname = pname;    }    public Integer getGender() {        return gender;    }    public void setGender(Integer gender) {        this.gender = gender;    }    public String getAddress() {        return address;    }    public void setAddress(String address) {        this.address = address;    }}

四：数据访问层(PersonDao.java)

@Repositorypublic class PersonDao {    //使用该注解来获取与当前事务关联的EntityManager    @PersistenceContext    private EntityManager entityManager;    public void save(Person person){        entityManager.persist(person);    }}

五：业务层（PersonService.java）

@Servicepublic class PersonService {    @Autowired    private PersonDao personDao;    @Transactional    public void save(Person person){        personDao.save(person);        int i=1/0;  //为了测试事务        personDao.save(person);    }}

六：测试类

@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration({"classpath:applicationContext.xml"})public class jpaTest {    @Autowired    private DataSource dataSource;    @Autowired    private EntityManagerFactory entityManagerFactory;    @Autowired    private PersonService personService;    @Test    public void testDataSource() throws Exception{        System.out.println(dataSource);        System.out.println(entityManagerFactory);    }    @Test    public void testEntityManagerFactory() throws Exception{        System.out.println(entityManagerFactory);    }    @Test    public void testSave(){        Person person = new Person("李四",1,"湖北");        personService.save(person);    }    @Test    public void textSaveTransaction(){        Person person = new Person("张三",0,"湖北");        personService.save(person);    }}